2MG1

NMR assignment and structure of a peptide derived from the trans-membrane region of HIV-1 gp41 in the presence of hexafluoroisopropanol

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-1H COSY	0.5 mM TMDp, 67.5 % H2O, 7.5 % [U-100% 2H] D2O, 25 % hexafluoroisopropanol, 2 mM HEPES, 0.1 mM DSS	hexafluoroisopropanol/water	2	7.0	ambient	298
2	2D 1H-1H TOCSY	0.5 mM TMDp, 67.5 % H2O, 7.5 % [U-100% 2H] D2O, 25 % hexafluoroisopropanol, 2 mM HEPES, 0.1 mM DSS	hexafluoroisopropanol/water	2	7.0	ambient	298
3	2D 1H-1H NOESY	0.5 mM TMDp, 67.5 % H2O, 7.5 % [U-100% 2H] D2O, 25 % hexafluoroisopropanol, 2 mM HEPES, 0.1 mM DSS	hexafluoroisopropanol/water	2	7.0	ambient	298
4	2D 1H-13C HSQC aliphatic	0.5 mM TMDp, 67.5 % H2O, 7.5 % [U-100% 2H] D2O, 25 % hexafluoroisopropanol, 2 mM HEPES, 0.1 mM DSS	hexafluoroisopropanol/water	2	7.0	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600

NMR Refinement
Method	Details	Software
torsion angle dynamics, molecular dynamics		TopSpin

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	TopSpin		Bruker Biospin
2	processing	TopSpin		Bruker Biospin
3	chemical shift assignment	Sparky		Goddard
4	structure solution	CYANA		Guntert, Mumenthaler and Wuthrich
5	refinement	Amber		Case, Darden, Cheatham, III, Simmerling, Wang, Duke, Luo, ... and Kollman
6	refinement	CYANA

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.